Hi there,
Press the bottom left button several times to cycle through the functions quickly. It should give you "Set" after "Chrono" when you do this. Use the buttons on the right side to set hour:min:sec etc.
Which battery did you put in there? I've got one and can't find a cheap rechargable battery. I'd be happy to put anything in that works and costs $5 or less.
Cheers,
Shawn

